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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $5,111,653 | $7,367,844 | $8,974,411 | $6,257,165 | $8,364,390 | $10,914,638 | $19,619,048 |
| Zinc sulphide | $838,235 | $112,589 | | | | | |
| Cadmium sulphide | $96 | $27 | | | | | |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | $4,910,021 | $4,208,183 | $4,477,634 | $6,399,841 | $3,760,605 | $5,261,907 | $5,884,403 |
| Total | $10,860,005 | $11,688,643 | $13,452,045 | $12,657,006 | $12,124,995 | $16,176,545 | $25,503,451 |
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